# Sergey Kolokolov

> Software Engineer. Technology enthusiast. Effectiveness maniac.

Location: Fremont, California, United States
Profile: https://flows.cv/sergeykolokolov

•	Profound knowledge and skills in testing web applications' UI, UX, APIs and DBs, strong negotiation and presentation skills, 4 years of team management experience (up to 7 team members).
•	Pronounced problem-solving approach and a strong internal drive to improve and optimize processes, e.g.: optimized release validation time from 14 to 2 hours, reduced sanity test execution time from 90+ to 27 minutes, report size from 14Mb to 800Kb, etc.
•	Meticulous project ownership advocate. Big fan of new technologies and tools. Strong believer of humanity's bright future. Gaining morale buff from working with talented fanatics.

## Work Experience
### Senior Software QA Engineer @ Tesla
Jan 2024 – Present | Fremont, California, United States
Building a new generation of Playwright TA frameworks for UI, API, DB and Integration testing of Tesla's Factory Software web applications, utilizing cutting edge automation technologies: 
•  Full TA parallelization for Pull Request/Release Candidate validation in under 10 minutes
•  100% containerization of TA for seamless test execution locally, in on-demand environments and in CI
•  GitHub Actions CI pipelines for automatic testing of every commit to every PR in GitHub
•  ReportPortal for tracking test results, storing test artifacts and creating TA dashboards

### Software QA Engineer @ Tesla
Jan 2023 – Jan 2024 | Fremont, California, United States
•  Built a Cypress/Cucumber TA framework for the FX Broker web app with 400 integration API tests between 4 factory applications, providing daily release validations under 30 minutes using on-demand TryFactory test environments and Jenkins CI/CD jobs sending detailed HTML reports via email
•  Built a Cypress/Cucumber TA framework with 470 API tests and a JMeter test suite with 12 performance TCs for the SPC web app to support safe and seamless transition from .NET to GoLang codebase and provide validation of Release Candidates in just 5 minutes
•  Reviewed/refactored/improved/expanded existing Playwright TA framework with 700 UI tests for the Station Controller app to reduce flakines, expand test coverage, improve reporting and provide TA validation with GitHub Actions CI for every commit of every PR in under 10 minutes

### Senior SDET @ Mosaic.tech
Jan 2022 – Jan 2023
•  Built an end-to-end test coverage for the Mosaic Admin web app using Cypress TA framework with Cucumber BDD layer of Gherkin feature files pulled from Jira.

### SDET Front End @ BlueOwl, LLC
Jan 2021 – Jan 2022 | San Francisco, California, United States
•  Built a FE TA library, moving ~7k LOCs from 3 separate FE repos to one with 100% unit test coverage, reducing FE TCs' flakiness from 15% down to 0.
•  Wrote an API tool to create parameterized insurance policies individually and in bulk, reducing legacy code by ~6k LOCs, and dramatically improving feature files readability.
•  Created a TestRail reporting interface, moving all the FE TA reporting from unreadable PyTest BDD HTML-files and folders with tons of screenshots to TestRail server with attached individual logs and screenshots for every test result, which reduced failures triage time by half.

### Quality Assurance Engineer @ BlueOwl, LLC
Jan 2020 – Jan 2021 | San Francisco, California, United States
• Wrote 300+ automated TCs for the HiRoad Quote web app UI with PyTest BDD automation framework which provided 100% test coverage reducing release validation time from 2 days to 90 minutes.
• Designed QA documentation (TC Lifecycle in Jira, Tests Criticality and State Specifics, Test Coverage Visual Map, etc.) using Miro application making QA onboarding process faster and clearer.

### Test Automation Engineer @ AppZen
Jan 2019 – Jan 2020 | San Jose, California, United States
•  Wrote 600+ automated TCs for UI, API, and DB testing using Robot Framework.
•  Created a full set of synthetic test data to provide end-to-end test coverage.
•  Set up a CI/CD pipeline in Jenkins to run all the tests in 5 environments and 5 browsers.

### QA Analyst @ AppZen
Jan 2019 – Jan 2019 | San Jose, California, United States
•	Wrote 150+ manual TCs for AP Audit Web application
•	Reported 200+ bugs in UI, UX, and AI performance.

### QA Intern @ Prepdup
Jan 2019 – Jan 2019 | Cupertino, California, United States
•	Wrote 500+ UI test cases for the Prepdup web application.
•	Provided end-to-end test coverage for every release candidate of the app.
•	Conducted cross-platform and cross-browser testing on 4 OSs in 3 different browsers.


## Education
### Master's degree in Law
Russian State University of Justice


## Contact & Social
- LinkedIn: https://linkedin.com/in/sergbells

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Source: https://flows.cv/sergeykolokolov
JSON Resume: https://flows.cv/sergeykolokolov/resume.json
Last updated: 2026-03-22